retro vs Mnema — Shared Brain for You and Your AI Agents
retro is a plugin bundle for AI coding tools published by netresearch. Marketplaces we read that list it: 1 (Community GitHub marketplaces). Mnema — Shared Brain for You and Your AI Agents is an MCP server published by theboringpeople.in. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-11-09. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  retro |   Mnema — Shared Brain for You and Your AI Agents |
|---|---|---|
| Community marketplace netresearch/claude-code-marketplace | Listed Version: 3.2.0 Forks (GitHub): 6 Stars (GitHub): 26 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.1.1 Forks (GitHub): 5 Stars (GitHub): 6 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | retro | Mnema — Shared Brain for You and Your AI Agents |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 26 (better) | 6 (worse) |
| Forks (GitHub) (differs) | 6 (better) | 5 (worse) |
| Last release (differs) | 2026-11-08 | Not published |
| Where it runs (differs) | Installs as a plugin bundle | Remote server (api.theboringpeople.in/mcp) |
| Transport (differs) | Not stated | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 2 | Not a bundle |
| Licence (differs) | (MIT AND CC-BY-SA-4.0) | Not stated |
| Repository (differs) | github.com/netresearch/retro-skill | github.com/nbkdoesntknowcoding/mnema |
| Changes in the last 7 days (differs) | 2 | 0 |
| First seen (differs) | 2026-10-30 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | Status out of date: no HTTP response at the last check 43 h ago |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
retro
LLM-driven session retrospection. Detects friction in agent sessions (mechanical pre-pass + LLM inference + cross-session) and materializes approved learnings into user memory, project rules, skill PRs, checkpoints, or harness artifacts. Commands: /retro, /retro outcome, /retro audit.
Mnema — Shared Brain for You and Your AI Agents
Self-hostable shared brain for you and your AI agents — docs, flows, meetings, decisions, rationale
How to run each
retro As a Claude Code plugin
/plugin marketplace add netresearch/claude-code-marketplace
/plugin install retro@netresearch-claude-code-marketplaceMnema — Shared Brain for You and Your AI Agents As a remote MCP server
claude mcp add --transport http mnema https://api.theboringpeople.in/mcpCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only Mnema — Shared Brain for You and Your AI Agents has a remote endpoint we check. How we check endpoints
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: retro · What it can do: Mnema — Shared Brain for You and Your AI Agents · Compare two other plugins
Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.